courseguru.net - robtex.com

courseguru.net

DNSSEC⚠️ Not signed
NSadel.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a37🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRadel.ns.cloudflare.com
A2803:f800:50::6ca2:c037🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRadel.ns.cloudflare.com
A2a06:98c1:50::ac40:2037🇺🇸 Cloudflare2a06:98c1:50::/45
PTRadel.ns.cloudflare.com
A108.162.192.55🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRadel.ns.cloudflare.com
A172.64.32.55🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRadel.ns.cloudflare.com
A173.245.58.55🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRadel.ns.cloudflare.com
NSdoug.ns.cloudflare.com
A2606:4700:58::adf5:3b9f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
A2803:f800:50::6ca2:c19f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdoug.ns.cloudflare.com
A2a06:98c1:50::ac40:219f🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdoug.ns.cloudflare.com
A108.162.193.159🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
A172.64.33.159🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
A173.245.59.159🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
SOAadel.ns.cloudflare.comdns@cloudflare.com serial=2399544427

net

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1774645987

Same first word

courseguru.ca
courseguru.pk
courseguru.com
courseguru.net
courseguru.cn

Similar names

sourceguru.net
gurusource.com
sourceguru.org

DNS History

12 records (2 active, 10 former)

20162017201820192020202120222023202420252026NSadel.ns.cloudflare.comdoug.ns.cloudflare.comns.namespace4you.dens2.dondominio.comns2.namespace4you.dens6.dondominio.comMXmxlb.ispgateway.deA134.119.2.1522a00:1158:0:407:1e4c::137.152.88.337.152.88.4637.152.88.54
●NSadel.ns.cloudflare.com2026-03-26 → 2026-03-27 · 3 obs
○ 2017-06-03 20:21:22
● 2026-03-26 02:13:06
● 2026-03-27 21:31:12
●NSdoug.ns.cloudflare.com2026-03-26 → 2026-03-27 · 3 obs
○ 2017-06-03 20:21:22
● 2026-03-26 02:13:06
● 2026-03-27 21:31:12
○NSns.namespace4you.de2015-07-02 → 2015-07-02 · 3 obs
● 2015-07-02 12:21:02
○ 2015-11-08 07:10:20
○ 2026-03-27 21:31:12
○NSns2.dondominio.com2015-11-08 → 2017-06-03 · 5 obs
○ 2015-07-02 12:21:02
● 2015-11-08 07:10:20
● 2017-06-03 20:21:22
○ 2026-03-26 02:13:06
○ 2026-03-27 21:31:12
○NSns2.namespace4you.de2015-07-02 → 2015-07-02 · 3 obs
● 2015-07-02 12:21:02
○ 2015-11-08 07:10:20
○ 2026-03-27 21:31:12
○NSns6.dondominio.com2015-11-08 → 2017-06-03 · 5 obs
○ 2015-07-02 12:21:02
● 2015-11-08 07:10:20
● 2017-06-03 20:21:22
○ 2026-03-26 02:13:06
○ 2026-03-27 21:31:12
○MXmxlb.ispgateway.de2015-07-02 → 2015-07-02 · 3 obs
● 2015-07-02 12:21:02
○ 2015-11-08 07:10:20
○ 2026-03-27 21:31:12
○A134.119.2.1522015-07-02 → 2015-07-02 · 3 obs
● 2015-07-02 12:21:02
○ 2015-11-08 07:10:20
○ 2026-03-27 21:31:12
○A2a00:1158:0:407:1e4c::12015-07-02 → 2015-07-02 · 3 obs
● 2015-07-02 12:21:02
○ 2015-11-08 07:10:20
○ 2026-03-27 21:31:12
○A37.152.88.32015-11-08 → 2015-11-08 · 4 obs
○ 2015-07-02 12:21:02
● 2015-11-08 07:10:20
○ 2016-02-07 22:38:00
○ 2026-03-27 21:31:12
○A37.152.88.462016-02-07 → 2016-04-28 · 5 obs
○ 2015-11-08 07:10:20
● 2016-02-07 22:38:00
● 2016-04-28 06:40:58
○ 2016-12-03 23:49:18
○ 2026-03-27 21:31:12
○A37.152.88.542016-12-03 → 2017-06-03 · 5 obs
○ 2016-04-28 06:40:58
● 2016-12-03 23:49:18
● 2017-06-03 20:21:22
○ 2026-03-26 02:13:06
○ 2026-03-27 21:31:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
netg.gtld-servers.net, d.gtld-servers.net, a.gtld-servers.net, l.gtld-servers.net...-
courseguru.netadel.ns.cloudflare.com, doug.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.159

NS records: adel.ns.cloudflare.com, doug.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseguru.net (unsigned zone)

⏱️ Timing

Total: 506ms | Queries: -

📄 Records

TypeCountSample Data
NS2adel.ns.cloudflare.com, doug.ns.cloudflare.com
SOA1adel.ns.cloudflare.com dns.cloudflare.co

Analysis

Name Servers

courseguru.net is delegated to two name servers adel.ns.cloudflare.com and doug.ns.cloudflare.com.

courseguru.net shares the same name server setup as other domains, for instance languagecourse.net, physiotrain.com.au, felhamsmartoffice.com, streetoracle.com and floodbusters.com.

courseguru.net at least partially shares name servers with other domains, for instance mustknow.tv, atsasmountainrace.com, sanweb.info, mindlab.institute and arnoldchiropracticcenter.com.

These name servers are commonly used alongside chan.ns.cloudflare.com and austin.ns.cloudflare.com.

Host names with six IP numbers:

Host name adel.ns.cloudflare.com points to: 2606:4700:50::adf5:3a37, 2803:f800:50::6ca2:c037, 2a06:98c1:50::ac40:2037, 108.162.192.55, 172.64.32.55 and 173.245.58.55.

Host name doug.ns.cloudflare.com points to: 2606:4700:58::adf5:3b9f, 2803:f800:50::6ca2:c19f, 2a06:98c1:50::ac40:219f, 108.162.193.159, 172.64.33.159 and 173.245.59.159.